Backup tool



FIG. 1 is a perspective view of a backup tool showing my new design.

FIG. 2 is a first side view thereof.

FIG. 3 is a second side view thereof.

FIG. 4 is a front view thereof.

FIG. 5 is a back view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines immediately adjacent to the shaded areas in FIGS. 1 and 6 represent unclaimed boundaries of the design. 

The ornamental design for a backup tool, as shown and described. 